My first post, but I think I got the jest.
I have 8 males in a 20 gallon lightly planted tank with drift wood. Fully cycled 6 weeks before fish adds. Tank stable for last 6 months. 0 ammonia. 0 nitrites. 10ppm nitrates . PH 7.5ish. 10 dGH. RO/DI water remineralized and buffered. All fish...